Hi Dave ,thanks for the reply,I will make it a priority and get it done before I reach 95k,piece of mind at least.Like yourself I had a belt go on a sierra some years back and I was doing about 30mph at the time and the car just stopped ,got a tow home and put a new belt on and lucky enough no damage done to the engine ( just as well it was the wifes car ! ) certainly not going to chance it with the XF. cheers Alan